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/*
 * Copyright 2008 ThoughtWorks, Inc.
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 */

package com.thoughtworks.selenium.condition;

/**
 * Simple predicate class, which also knows how to wait for its condition to be true.
 * Used by Selenium tests. A "Not" is the inverse of any other Condition.
 */
public class Not extends Condition {
    private Condition positiveCondition;

    public Not(Condition positiveCondition) {
        super("NOT of (" + positiveCondition.getMessage() + ")");
        this.positiveCondition = positiveCondition;
    }

    public boolean isTrue(ConditionRunner.Context context) {
        return !positiveCondition.isTrue(context);
    }

}